<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>H5新增语义化标签</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        html,body{
            height: 100%;
        }
        header,footer{
            height: 50px;
            line-height: 50px;
            text-align: center;
            background: orange;
        }
        section{
            height: calc(100% - 100px);
        }
        nav,aside{
            width: 100px;
            height: 100%;
            background: #ccc;
            float: left;
        }
        main{
            float: left;
            width: calc(100% - 200px);
            background: white;
            height: 100%;
        }
        aside .p-aside{
            font-size: 12px;
            color: white;
        }
        main .article1{
            height: 50%;
        }
        main .article2{
            height: 50%;
        }
    </style>
</head>
<body>
    <header>header</header>
    <section>
        <nav>
            <figure>nav</figure>
            <ul>
                <li>1</li>
                <li>2</li>
                <li>3</li>
            </ul>  
        </nav>
        <main>
            <article class="article1">
                <header>article-header</header>
                <p>
                    Lorem ipsum dolor sit amet consectetur adipisicing elit. Incidunt aperiam doloremque praesentium rem qui similique autem labore distinctio enim. Velit molestiae totam eos commodi quis rerum repudiandae id labore ipsam!
                </p>
                <footer>article-footer</footer>
            </article>

            <article class="article2">
                <header>article-header</header>
                <p>
                    Lorem ipsum dolor sit amet consectetur adipisicing elit. Incidunt aperiam doloremque praesentium rem qui similique autem labore distinctio enim. Velit molestiae totam eos commodi quis rerum repudiandae id labore ipsam!
                </p>
                <footer>article-footer</footer>
            </article>
        </main>
        <aside>
            <figure>aside</figure>
            <p class="p-aside">
                Lorem ipsum, dolor sit amet consectetur adipisicing elit. Modi porro earum, accusamus quasi quae necessitatibus consequatur voluptatibus at blanditiis enim quidem maiores placeat? Animi quod veritatis dignissimos fugit incidunt. Eaque?
            </p>
        </aside>
    </section>
    <footer>footer</footer>
</body>
</html>